Radeon r6xx with KMS not working

[Alex Deucher]

On Tue, Sep 8, 2009 at 8:20 PM, Mike Lothian<mike at fireburn.co.uk> wrote:
> 2009/9/9 Alex Deucher <alexdeucher at gmail.com>:
>> On Tue, Sep 8, 2009 at 7:17 PM, Mike Lothian<mike at fireburn.co.uk> wrote:
>>> 2009/9/8 Mike Lothian <mike at fireburn.co.uk>:
>>>> 2009/9/8 Alex Deucher <alexdeucher at gmail.com>:
>>>>> On Tue, Sep 8, 2009 at 6:34 PM, Mike Lothian<mike at fireburn.co.uk> wrote:
>>>>>> Hi
>>>>>>
>>>>>> When using the new drm-next branch KMS fails (see attached logs) with
>>>>>> radeon.modeset=0 passed the computer will hard lockup when KDM is
>>>>>> starting (I think this is when the compositing is started)
>>>>>
>>>>> [drm:r600_ib_test] *ERROR* radeon: fence wait failed (-16).
>>>>> [drm:rv770_init] *ERROR* radeon: failled testing IB (-16).
>>>>>
>>>>> Pull the latest from the drm-next branch.
>>>>>
>>>>> Alex
>>>>>
>>>>
>>>> Just noticed that after Perry pointed out the fix on Phoronix
>>>>
>>>> Thanks
>>>>
>>>> Will let you know how I get on
>>>>
>>>
>>> The good news is that KMS now works, the bad news is KDM still wont
>>> start with compositing. Plain X works and glxgears work as does KDM
>>> with compositing off
>>>
>>> Glxgears says:
>>> IRQ's not enabled, falling back to busy waits: 2 1
>>> do_wait: drmWaitVBlank returned -1, IRQs don't seem to be working correctly.
>>>
>>> My dmesg says:
>>>
>>> Unpin not necessary for ffff88007c9a1600 !
>>> Unpin not necessary for ffff88006eda6400 !
>>> Unpin not necessary for ffff88006b14d400 !
>>>
>>> I couldn't see anything in my Xorg.0.log file that would explain why
>>> KDM keeps rebooting
>>>
>>> Is there anything else that might be useful?
>>>
>>
>> kde GL compositing doesn't work that well at the moment even without KMS.
>>
>> Alex
>>
>
> I'm reporting a regression from the r6xx-r7xx-3d tree, the new code
> causes X to restart
>

It's not a regression as KMS did not work until recently;  lots of
stuff has problems in dri2 mode with the current r600 3d driver.  Or
are you saying that the drm-next code with KMS disabled is causing a
problem?

Alex